'chorioallantois' definitions:

Definition of 'chorioallantois'

From: WordNet
noun
The very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois [syn: chorioallantois, chorioallantoic membrane]

Definition of 'chorioallantois'

From: GCIDE
  • chorioallantois \chorioallantois\ n. a very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois.
  • Syn: chorioallantoic membrane. [WordNet 1.5]